C# IEnumerable Nasıl Kullanılır Üzerinde Buzz söylenti

C# IEnumerable Nasıl Kullanılır Üzerinde Buzz söylenti

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So if we have IEnumerable bey parameter of any method, we gönül pass any collection types to the function. Ie we hayat have method to operate on abstraction hamiş any specific implementation.

If you maksat to build a public API, it's better to use IEnumerable than List, because you better use the most minimalistic interface/class. List lets you access objects by index if that's required.

Umumi sıfır bir derlem üzerinde kolay bir yinelemeyi destekleyen bir numaralandırıcıyı kullanıma sunar.

Özellikle Dictionary, HashSet kadar muta konstrüksiyonlarıyla yan yana kullanılarak özelleştirilmiş katlaştırmalar esenlar. Böylece, farklı veri tipleri yahut kompozitşık huzurlaştırma kuralları gerektiren durumlarda kullanıcıya esneklik esenlar.

This will create a new list element for each element in memory, enumerating the IEnumerable and is thus less performant if you only enumerate once - but safer and sometimes the List methods are handy (for instance in random access).

Oluşturduğunuz klası, koleksiyon oluştururken yahut zıtlaştırma gerektiren öteki senaryolarda kullanabilirsiniz.

Ryan LundyRyan Lundy 208k4141 gold badges183183 silver badges214214 bronze badges 3 4 Then why do we need this IEnumerable abstraction, if the only thing it does is just provide an access to Enumerator? Why don't just use Enumerator instead

Short story about a gestalt living on a fake tropical island / paradise planet, who was actually an adult CEO but didn't remember it

Now what makes IEnumerable really stand out is iterator blocks (the yield keyword in C#). C# IStructuralComparable nerelerde kullanılıyor Iterator blocks implement the IEnumerable interface like a List or an Array, but they're very special because unlike a List or Array, they often only hold C# IStructuralComparable Kullanımı the state for a single item at a time. So C# IEnumerable Nedir if you want to loop over the lines in a very large file, for example, you güç write an iterator block to handle the file input.

Örneğin, bir List veya ArrayList üzere koleksiyonların ciğerindeki verileri sıralı bir şekilde gidermek veya muayyen bir koşula için filtrelemek ciğerin IEnumerator kullanılabilir. Bu, mukayyetm ihya sürecinde verimliliği fazlalıkrır ve kodun okunabilirliğini iyileştirir.

Then with a IQueryable the generated SQL will contains “where name = “a”, but with a IEnumerable many more roles will be pulled back from the database, then the x.name = “a” check will be done by .Safi.

means that "var myResult" contains all elements from myEnumerableList, only when this element (here, called 'u')saf a property userId that is equal to "Yusuf"

Then you'll never have more than one line of the file in memory at a time, and if you finish the loop earlier (perhaps it was a search and you found what you needed) you might C# IStructuralComparable Nasıl kullanılır hamiş need to read the whole file. Or if you're reading the results from a large SQL query you gönül limit your memory use to a single record.

The most important thing to realize is that, using Linq, the query does derece get evaluated immediately. It is only run bey part of iterating through the resulting IEnumerable in a foreach - that's what all C# IStructuralComparable Nasıl kullanılır the weird delegates are doing.